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. Author manuscript; available in PMC: 2021 Oct 1.
Published in final edited form as: Nat Rev Gastroenterol Hepatol. 2020 Jul 24;17(10):597–617. doi: 10.1038/s41575-020-0331-7

Figure 2. O-glycan core structures.

Figure 2.

Cores 1–9 are shown. Core 1–4-based structures constitute the majority of O-glycans, whereas cores 5–9 are generally absent or a relatively minor component. Cores 1 and 2 are ubiquitous whereas cores 3 and 4 are restricted to the gastrointestinal tract.